baber/WOPTO huggingface dataset:
Patent GB-1062584-A (GB)
Title: A lumped-constant non-reciprocal electric circuit
IPC: H03H7/00
Filed: 1964-05-08
Abstract: 1,062,584. Non-reciprocal networks. NIPPON ELECTRIC CO. Ltd. May 8, 1964 [May 9, 1963], No. 19213/64. Heading H3U. [Also in Division H1] A non-reciprocal circuit comprises a ferromagnetic body with two windings (each of one or more turns) at an angle to one another (preferably 90 degrees), a source of high-frequency current connected to one end of each winding, means for adjusting the relative phase of the currents in the windings, and means for applying a steady magnetic field to the ferromagnetic body at right-angles to the plane of the windings, whereby gyromagnetic resonance can occur in the body. In Fig. 2 current from a signal generator 30 flows through two windings 16, 17 on the body 15. Winding 16 has a series capacitor 26 to provide a series resonant circuit at the operating frequency (e.g. 140 Mc/s.) while winding 17 is shunted by a reactance 28 to form a parallel resonant circuit, a phaseadjusting capacitor 24 being also included. Depending on the reactances of 17 and 24, the element 28 may be inductive or capacitative. The circuit is adjusted so that the currents in 16 and 17 have at least one sinusoidal component which is equal in magnitude and 90 degrees apart in phase. If the supply frequency and the strength of the magnetic field are correctly adjusted so that gyromagnetic resonance occurs in the body, the attenuation of signals between points 20 and 22 will be very large in one direction and very small in the other. For other conditions, signals will pass in both directions but with different degrees of phase-shift. Three gyro-resonant bodies can be connected together with the first windings of each in star connection and the second windings in delta connection (Fig. 4, not shown). Three pairs of terminals are then provided, and the circuit is adjusted so that currents in one direction are shifted in phase by 60 degrees in each element while currents in the other direction are shifted by 120 degrees. The whole arrangement then acts as a directional three-port circulator with a total phase shift of 180 degrees in one direction and 360 degrees in the other. The three gyromagnetic elements can be mounted on the same ferromagnetic body (Fig. 1e, not shown) with slots cut to prevent undesired coupling between the three magnetic fields. The ferromagnetic body can be circular or polygonal (e.g. square). The windings can be rotatable about the axis of the body, and they may encircle the edge or pass through holes as in Fig. 1e. The ferromagnetic body can be inserted in a recess in an insulating former around which the windings pass. Reference has been directed by the Comptroller to Specification 863,866.
Patent GB-369108-A (GB)
Title: Improvements relating to homogeneous armour plate
IPC: C22C38/44
Filed: 1931-07-03
Abstract: Homogeneous armour plate is made from steel alloys containing about 2-4 per cent of chromium, not more than about 0,26 per cent of carbon, and either 0,15-1 per cent of molybdenum or 0,3-3 per cent of tungsten, with or without up to 3 per cent of nickel, the chromium being not less than the nickel, and the total of nickel and chromium being not more than 5,4 per cent.  After hardening, the plates may be tempered at up to 700 DEG  or 750 DEG  C.
Patent GB-911790-A (GB)
Title: Apparatus for bending sheet metal hanger tabs for refractory bricks
IPC: B21D5/00
Filed: 1961-05-29
Abstract: 911,790. Making metal-cased refractory bricks; angular bending. HABBISON-WALKER REFRACTORIES CO. May 29, 1961 [June 22, 1960], No. 19257/61. Classes 83 (2) and 83 (4). Apparatus for bending sheet metal hanger tabs away from the ends of metal-cased refractory bricks moved through the apparatus includes means for temporarily clamping each successive brick in fixed position and a hammer moved to strike the central portion of a hanger tab on a clamped brick, the hammer being shaped to cause the free end of such a tab to bend forward when the tab is struck by the hammer. A refractory brick 1 is moulded in a metal case formed from two telescoping channels 2, 3 spot-welded together, a hanger tab 4 being moulded in one end. At the edge of the brick the tab may be secured to a reinforcing plate inside the brick or may be welded to the case. To bend the free end of the tab slightly away from a brick to allow the tab to be later bent at right angles to the end of the brick, bricks are fed in succession on an intermittently moving conveyer 7 to a position in which a brick is clamped by a pad 11 moved down by fluid pressure means. A slide 13 carrying fluid pressure hammer actuating means 20, then moves down to a position such that the hammer head 24 is in front of the brick and the hammer is driven so that an impact edge 25 thereon strikes the centre of the tab 4 and causes the free end of the tab below the hammer to bend forward slightly.
Patent GB-1373693-A (GB)
Title: Method of producing imperfect wurtzite-like boron nitride
IPC: C04B35/5831
Filed: 1972-04-26
Abstract: 1373693 Wurtzite-like boron nitride FILIAL ORDENA LENINA INSTITUTA KHIMICHESKOI 26 April 1972 [19 July 1971] 19260/72 Heading C1A Imperfect wurtzite-like boron nitride having a crystal unit cell wherein a0 = 2À55Š and c0 = 4À20Š at 25‹ C., a pycometric density of from 3À10 g./cm.<3> to 3À38 g./cm.<3>, a transition temperature into graphite-like boron nitride of 700‹ C., a specific surface area of not less than 10 m.<2>/g. and a refractive index less than 2À10 for red light of specific wave length 6620Š. The product may be made by subjecting a mixture of powdered graphite-like boron nitride and an additive other than an elemental metal having a shock impedance different from, and a residual temperature lower than that of the BN to be formed to a shock wave. The pressure of the shock wave may be not less than 100 K Bar and may be produced by an explosion in a protective device. The additive may be water or an aqueous solution (1-5%), of an alkaline reagent such as NaOH, KOH or Na2CO3.
Patent GB-354490-A (GB)
Title: Improvements in coin-freed vending machines
IPC: G07F13/10
Filed: 1930-06-24
Abstract: 354,490. Coin-freed liquid-dispensing apparatus. RICHTER, L. and ASENBAUM, E., (trading as FRECALDO AUTOMATEN - HANDELSGES. RICHTER & CO.), 4, Rathausstrasse, Vienna. June 24, 1930, No. 19271. Convention date, June 25, 1929. [Classes 27 and 116.] In a coin-freed machine for vending drinks a container A, released from a receptacle after the insertion of a coin, falls on to a rotary disc 2 and is fed through a channel 3, 3, under a filling device 5 and then in front of a shutter 10. A spring- controlled arm 12 on the shutter is released by a cam 11 driven from the shaft 1 of the disc 2, and the shutter pushes the container through the delivery opening on to a tray 26. When the shutter 10 is open the channel 3, 3, is closed by a plate 7 actuated by a cam on a wheel 6 on the shaft 1. A container which is not delivered to the tray 26 is pushed through an opening 4<11> by the shutter 10 and is then removed from the disc 2 by an arm 25. Coin-slot closing-devices.-A projection 22 on a lever 16 closes the slot 15 when the shutter 10 is open. When this is closed a roller 18 on the lever moves along a curved track 19, connected to the shutter, so as to remove the projection 22.
Patent GB-1068012-A (GB)
Title: Heating and ventilating device for motor vehicles
IPC: B60H1/00
Filed: 1964-05-08
Abstract: 1,068,012. Ventilating vehicles. SOC. ANON. FRANCAISE DU FERODO. May 8, 1964 [May 9, 1963], No. 19290/64. Heading F4V. The air supplies to the windscreen and floor space of a motor vehicle are independently operated by devices including lost-motion linkages which allow regulation of a warm air flow while shutting off a cold air flow. As illustrated, a fan (not shown) supplies fresh air to a compartment 2 which is connected through a radiator 4 with a warm air compartment 21. Flaps 10 and 15 control cold and warm air flows to a collector communicating through openings 18 with the lower part of the vehicle. Flaps 11 and 12, and 16 and 17 control cold and warm air flows to two further collectors communicating through ducts 20a with the windscreen. The flap 15 is mounted on a shaft (25), Fig. 3 (not shown), rotatable by a cable, a toothed segment and a pinion, Fig. 2 (not shown). A lever (28) is mounted on the shaft (25) and has an oval hole (28a) engaged by a gudgeon (31) of a connecting link (29) articulated to a lever (30) attached to the shaft (27) of the flap 10. The gudgeon (31) also moves in a guide (32) formed in a member fixed with respect to the apparatus housing. The guide (32) has two arcuate sections such that the flap 15 may be fully opened while the flap 10 remains closed and rotation of the flap 15 past its fully open position progressively opens the flap 10 to increase the supply of cold air while the supply of warm air is reduced. A flap (22) allows warm air to pass to the rear of the vehicle. The windscreen warm air flaps 16 and 17 are mounted on a common shaft as are the cold air flaps 11 and 12, and these shafts are controlled by a mechanism, Fig. 4 (not shown), similar to that described above.
Patent GB-369491-A (GB)
Title: Improvements in or relating to flexible valves for piston type compressors
IPC: F04B39/08
Filed: 1931-07-04
Abstract: 369,491. Flexible blade valves. BETHENOD, J., 79, Boulevard Haussmann, Paris. July 4, 1931, No. 19337. Convention date, Sept. 17, 1930. Addition to 366,253, [Group XXVIII]. [Class 135.] The compressor of the parent Specification is provided with positively controlled flexible blade valves A which are free to move at both extremities and are provided with stops to limit their movements. The upper stops H, I are curved or inclined: The blade valves A may be arranged to effect closure between the edges of the blade and the walls of the seating aperture c, or between the faces of the blades and the apertured face of the seatings D.
Patent GB-422137-A (GB)
Title: Improvements relating to underframes or bogie frames for rail, road and other vehicles
IPC: B61F5/36
Filed: 1933-07-07
Abstract: 422,137. Rail and road vehicle undercarriages. MOHL, S., 33, Amaliegade, Copenhagen. July 7, 1933, No. 19337. Convention date, July 8, 1932. [Classes 103 (vi) and 108 (ii)] In mounting the underframe of a multi-axle rail or road vehicle or the frame of a bogie the end sets e of a group of wheels are supported on each side by means of double-armed levers c<1>, c' pivoted at fixed points d to the underframe, the inner arms c<2> of the levers being pivotally connected to the one or more plates prings g associated with the one or more intermediate axles, whereby the number of springs necessary on each side is two less than the number of axles. In the arrangement shown in Fig. 1 a single spring g is employed at each side of a three-axle vehicle or bogie and is connected by links f to the lever arms c<2>, while the ratio of the arms c<1>, c<2> is arranged to distribute the load equally to all the axles. In the four axle vehicle or bogie shown in Fig. 2 the springs g associated with the two intermediate axles are connected by a balance lever j for ensuring an equal load distribution. In order to prevent longitudinal pitching or rocking of the vehicle when mounted on bogies, the body is supported on each bogie by a spherical head disposed at a short distance longitudinally to the rear or front of the bogie centre in combination with a slide or roller surface on the opposite side of the bogie centre. The same result may be attained by omitting the balance link on one side of the bogie illustrated in Fig. 2, or by adding to the arrangement illustrated in Fig. 1, a separate wheel set k associated with springs l as shown in Fig. 3. The levers c<1>, c<2> may be disposed either to the inside or to the outside of the wheels, and, in the case of the steered wheels of road wheels, may be cranked to accommodate the swivelling movements of the wheels. Where more than three sets of intermediate wheels are employed, balance links may be omitted on both sides of the vehicle.
Patent GB-380539-A (GB)
Title: Improvements in carrier current electric signalling systems
IPC: H04B3/56
Filed: 1931-07-06
Abstract: 380,539. Wired wireless systems ; impedance networks. GENERAL ELECTRIC CO., Ltd., Magnet House, Kingsway, London, WILLIS, F. B. and WESTELL, E. P. L., of General Electric Co., Telephone Works, Stoke, Coventry. July 6, 1931, Nos. 19421/31 and 3352/32. [Classes 40 (iii) and 40 (v).] A-network of the type shown in Fig. 1, having at least three resonance frequencies, is utilized as a coupling or bridging circuit in a carriercurrent signalling system, two of the resonance frequen. cies being used foi signalling (one in each direction) whilst the third or intermediate resonance frequency serves as a highimpedance bar between the signalling channels. As shown in Fig. 2, the network is connected between a transmitting and receiving apparatus 3, and the transmission lines P, the main elements being lettered as in Fig. 1. The coil 8 is coupled to the transmitter and the coil 9 to the receiver, both coils forming part of the inductance L1. The capacity C1, Fig. 1, is made up of the negative reactance of the usual blocking condensers 1, 2, the connecting wires 4, 5, and the line P as viewed from the points 6, 7. The network may be used as a simple bridge between two power lines or may be inserted in one side of a bridging circuit. As shown in Fig. 6, the inductance L2 and capacity C2 are arranged in one branch and-the inductance L1 and coupling-coil 3 in another branch of the bridging circuit. Specification. 277,329, [Class 40 (v), Wireless signalling &c.], is referred to.
Patent GB-1515976-A (GB)
Title: Stabilization of tows of filamentary material
IPC: H05B6/78
Filed: 1976-05-12
Abstract: 1515976 Reservoir pens BAUMGARTNER PAPIERS SA 12 May 1976 [30 May 1975 17 July 1975] 19456/76 Addition to 1478719 19 Heading A4K [Also in Divisions A2, D1 and H5] To form a fibrous pen core a tow of filamentary dielectric material is bonded by passing the tow through at least one resonant cavity in an electric field having a frequency between 3 x 10<SP>8</SP> and 3 x 10<SP>11</SP> Hz and a hot gas is injected into contact with the tow in the resonant cavity or cavities. The outside of the tow is heated by the gas and the inside by dielectric heating. Preferably the tow is of cellulose acetate filaments impregnated with triacetin as a heat activatable binder (plasticizer), and the gas e.g. water, methanol, ethanol or propanol has a higher dielectric constant than that of the filaments and binder. Alternatively air may be used as the gas. The bonded rod may be used as a cigarette filter, no paper wrapping being required, or a pen core. The Micro-wave heating apparatus is modified from that disclosed in Specification 1478719 in that each cavity has an orifice for injecting the gas or mixture of gases under pressure, the tube for guiding the tow through the cavities is either perforated or replaced by tube segments between the adjoining cavities and the belt which wraps around and conveys the tow is woven so as to be permeable to the gas. The gas is pre-heated before entering the cavities and if of higher dielectric constant than the tow it will absorb heat from the electric field and transfer it to the tow.
Patent GB-1239902-A (GB)
Title: Treatment of fibrous sheet materials
Inventor: CLOKE IVOR JOHN
Filed: 1967-04-27
Abstract: 1,239,902. Paper. INTERNATIONAL SYNTHETIC RUBBER CO. Ltd. 29 July, 1968 [27 April 1967], No. 19461/67. Heading D2B. A non-woven fabric having dispersed throughout the body thereof an elastomeric material containing free hydroxyl groups on the polymer chain is prepared by applying to the fabric fibres a latex of an elastomeric copolymer consisting of at least 70 % by weight of a conjugated diene, e.g. butadiene or isoprene, 5 to 15 % by weight of one or more ethylenically unsaturated hydroxyl-containing monomers and 0 to 25% by weight of a vinylaromatic compound, e.g. styrene. Examples of the hydroxyl-containing monomers are hydroxy-alkyl esters of unsaturated acids, e.g. of acrylic acid, methacrylic acid, fumaric acid, maleic acid, oleic acid, crotonic acid, itaconic acid, ricinoleic acid, such as hydroxypropyl acrylate, hydroxy-propyl methacrylate, butyl hydroxy-propyl maleate or butyl hydroxy-ethyl fumarate. N-methylol-acrylamide is the preferred hydroxyl-containing monomer. The polymer which may be prepared by copolymerisation of the monomers in emulsion is preferably applied to the fibres dispersed in an aqueous medium. The elastomeric material may be dispersed throughout the fabric by impregnation of the fabric e.g. by immersing the fabric in the elastomer or by spraying the fabric. A solution of a polycarboxylic acid having a pH of from 3 to 7, e.g. oxalic or citric, may be applied to the fabric during or after manufacture. Fibres referred to are α-cellulose, cotton linters, xanthate rayon, nylon filament or a mixture of these fibres. Cationic polyamide, polyehtylene imine or alum may be added to the pulp prior to the application of the latex.
Patent GB-384935-A (GB)
Title: Improvements in ladders
IPC: E06C7/08
Filed: 1932-07-11
Abstract: 384,935. Ladders. WIKSTRAND, A., Mora, Sweden. July 11, 1932, No. 19619. Convention date, Nov. 5, 1931. [Class 20 (ii).] - A ladder is formed with tubular sides and rungs, the sides 1 being of flattened hexagonal or oval section and the rungs 2 of circular or oval section with the ends reduced and passing through apertures in the sides where they are clinched over at 3 on the outsides. The ladders may be provided with hooked upper ends to engage window sills.
Patent GB-359892-A (GB)
Title: Improvements in or relating to wings for aeroplanes and like aircraft
IPC: B64C3/00
Filed: 1930-06-27
Abstract: 359,892. Aircraft wing structures. NAVARRO, J. G. and NAVARRO, M. A., 21, Berrylands Road, Surbiton, Surrey. June 27, 1930, No. 19664. [Class 4.] Aeroplane wings of the type having separately constructed leading and/or trailing edge portions and/or wing tips have the ribs 2, Fig. 1, of the central portion of the wing extending outwardly beyond the longitudinal spars 1 and the ribs 31, 41, of the leading and/or trailing edge portions 3, 4, which may be of any desired width, extending inwardly beyond the spars 1, the ribs of the several portions interpenetrating. The ribs 3<1>, 4<1> are secured to the spars 1 and may if required be secured to ribs 2. The portions 3, 4 may be separately assembled on longitudinal spars before attachment to the spars 1 or the ribs 3<1>, 4<1>, may be first secured and the outer covering applied when they are in position. An upturned wing tip is separately constructed and comprises principal ribs 5, shaped as shown in either of Figs. 3 or 4, intermediate ribs and cross bracing. The principal ribs 5 correspond in number to the spars 1 and are attached to I-section spars as shown in Fig. 3 and to box spars as in Fig. 4.
Patent GB-276319-A (GB)
Title: Improvements in and relating to electric condensers and to methods of manufacturing the same
IPC: H01G4/32
Filed: 1927-07-25
Abstract: 276,319. British Thomson-Houston Co., Ltd., (Assignees of Kienle, R. H., and Dawson E. S.). Aug. 18, 1926, [Convention date]. Condensers are made by winding the elements in a liquid dielectric which solidifies after the condenser is wound, and allowing the dielectric to solidify with the elements in it. A suitable dielectric is molten sulphur, although anthracene, petroleum pitch, or a synthetic resin such as plastic glyptal may be used. Strips of aluminium from rolls 2, 3 are passed through receptacles 4, 5 containing an oxidizing solution such as sodium silicate where they are subjected to 450-500 volts D.C. which is applied between the rolls and either the receptacles or, where the latter are of insulation, to aluminium plates therein. After this oxidation, the strips are passed through washing receptacles 6, 7 and dried at a temperature of 150‹ C. in ovens 8, 9. The receptacle 10 contains the molten sulphur which is maintained by an electric heating element 12 at a temperature between 115 and 155‹ C., and preferably at 140‹ C., the shaft 13 being wound, as by a crank, until the requisite size is obtained, whereupon the shaft is withdrawn and the sulphur allowed to crystallize. The whole unit can be detached by slightly softening the sulphur by heating the receptacle walls. In finishing off, the ends are ground down to expose the bare metal and metal plates 14, 15 are applied, 14 being in connection with a core 16 carrying an insulator 17 and terminal 18 and the plate 15 carrying a terminal 19. The ends of the strips are secured by cement, gummed paper, or the like to a bushing 20, which is slipped over the shaft 13 when the condenser is to be wound, and an outer covering of cloth, wax, or the like may be provided. Instead of oxidizing the strips, layers of paper fed from rolls may be employed to separate them, the strips then passing from the rolls directly to the receptacle 10.
Patent GB-457264-A (GB)
Title: Improvements in electric torches
IPC: F21L4/00
Filed: 1936-07-16
Abstract: 457,264. Electric battery lamps. ELEKTROTECHNISCHE FABRIK SCHMIDT & CO., GES., Podmokly, Czecho Slovakia. July 16, 1936, Nos. 19762 and 19763. Convention dates, July 16, 1935 and Sept. 30, 1935. [Class 39 (ii)] In an electric pocket torch of tubular form, of the kind provided with a pocket clip which forms a switching member, the pocket clip 3 forms part of a spring strip which is secured at its mid-portion 11 to a removable cap 2 on the upper end of the torch, the other end 5 of the strip being offset at 6 to extend through a slot in the cap 2 so that it can be depressed into contact with a metal contact member 8 within the casing. The member 8 is mounted upon an insulating disc 7 and connected to the adjacent pole of one of the cells by a compressed helical spring 9. The resilient portions 3, 5 forming the clip and switch are spaced from the side of the cap and extend parallel thereto. Accidental depression of the switch 5 may be prevented by the provision of a locking-member 14 comprising an arcuate metal strip slidable longitudinally upon the end cap and provided at its upper edge with a recess which can be aligned to form a stop for lateral shoulders adjacent to the end 6 of the switch member 5. A lug 15 on the locking member 14 engages within a longitudinal guiding slot in the casing.